Enter the height and the radius of the heap or shape into the calculator to determine the angle of repose.

## Angle of Repose Formula

The following formula is used to calculate the angle of repose.

a = atan (h/r)

- Where a is the angle of repose
- h is the height
- r is the radius/distance

## Angle of Repose Definition

An angle of reposed is a measure of the flowability of bulk solids such as powders. In other words, when bulk solids are poured into a heap or mound, what is the angle the heap makes with the ground.

## Angle of Repose Example

How to calculate angle of repose?

**First, determine the height.**Measure the height of the mound or heap of solid.

**Next, determine the radius.**Measure the radius/distance of the mound.

**Finally, calculate the angle of repose.**Calculate the angle of repose using the equation above.

## FAQ

**What is the angle of repose?**

An angle of repose is a measure of the flowability of mounds of bulk solids.

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